Robtex

Up: 173.242.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 173.242.20.0/25
Down right: 173.242.20.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.242.20.0	PTR	ipv4-173-242-20-0.greenhousedata.net
173.242.20.0	A	lenderstrategy.com
173.242.20.2	PTR	173.242.20.2.static.greenhousedata.net
173.242.20.8	PTR	173.242.20.8.static.greenhousedata.net
173.242.20.8	A	mail2.ides.com
173.242.20.11	PTR	173.242.20.11.static.greenhousedata.net
173.242.20.11	A	cipd.ides.com
173.242.20.13	PTR	173.242.20.13.static.greenhousedata.net
173.242.20.18	A	cartech.ides.com
173.242.20.29	PTR	173.242.20.29.static.greenhousedata.net
173.242.20.29	A	prospector.ides.com
173.242.20.29	A	redirects.ides.com
173.242.20.30	A	ftp.ides.com
173.242.20.65	PTR	173.242.20.65.static.greenhousedata.net
173.242.20.65	A	cloud65.cbsend.com
173.242.20.66	A	cloud66.cbsend.com
173.242.20.67	A	cloud67.cbsend.com
173.242.20.71	A+PTR	cloud71.cbsend.com
173.242.20.72	PTR	173.242.20.72.static.greenhousedata.net
173.242.20.72	A	cloud72.cbsend.com
173.242.20.73	A	cloud73.cbsend.com
173.242.20.74	A+PTR	cloud74.cbsend.com
173.242.20.75	A	cloud75.cbsend.com
173.242.20.76	PTR	173.242.20.76.static.greenhousedata.net
173.242.20.76	A	cloud76.cbsend.com
173.242.20.77	PTR	173.242.20.77.static.greenhousedata.net
173.242.20.77	A	cloud77.cbsend.com
173.242.20.79	A	cloud79.cbsend.com
173.242.20.80	PTR	173.242.20.80.static.greenhousedata.net
173.242.20.80	A	cloud80.cbsend.com
173.242.20.81	A	cloud81.cbsend.com
173.242.20.82	A	mx.digileadgen.com
173.242.20.82	A	mx.mtapriority18.com
173.242.20.82	A	mx.elgprovider3.com
173.242.20.84	A	cloud84.cbsend.com
173.242.20.85	PTR	173.242.20.85.static.greenhousedata.net
173.242.20.85	A	cloud85.cbsend.com
173.242.20.86	PTR	173.242.20.86.static.greenhousedata.net
173.242.20.86	A	cloud86.cbsend.com
173.242.20.87	A	cloud87.cbsend.com
173.242.20.88	PTR	173.242.20.88.static.greenhousedata.net
173.242.20.88	A	cloud88.cbsend.com
173.242.20.89	A+PTR	cloud89.cbsend.com
173.242.20.90	A	cloud90.cbsend.com
173.242.20.91	A	cloud91.cbsend.com
173.242.20.92	A	cloud92.cbsend.com
173.242.20.93	PTR	173.242.20.93.static.greenhousedata.net
173.242.20.93	A	mx.hire-great-auto-techs-corp.com
173.242.20.93	A	mx.goodknightpubsemails.com
173.242.20.94	A	ns2.cbnameserver.com
173.242.20.94	A	cloud94.cbsend.com
173.242.20.100	PTR	173.242.20.100.static.greenhousedata.net
173.242.20.102	PTR	173.242.20.102.static.greenhousedata.net
173.242.20.102	A	mail.wyops.com
173.242.20.102	A	ums.wyops.com
173.242.20.103	A	mail.theblueskygroup.com
173.242.20.104	A	mail.laramiesteakhouse.com
173.242.20.117	PTR	173.242.20.117.static.greenhousedata.net
173.242.20.133	A	mail.lclsonline.org
173.242.20.156	PTR	173.242.20.156.static.greenhousedata.net
173.242.20.181	A	keithvogt.net
173.242.20.181	A	hazewizard.com
173.242.20.181	A	majorserv.com
173.242.20.182	PTR	173.242.20.182.static.greenhousedata.net
173.242.20.182	A	wyomingra.com
173.242.20.183	PTR	173.242.20.183.static.greenhousedata.net
173.242.20.183	A	wyoming-virtual-office.com
173.242.20.183	A	instantwyomingllc.com
173.242.20.185	A	limitedliabilitycompanyarticles.com
173.242.20.185	A	wyomingregisteredagents.com
173.242.20.204	A	winhealthmail.com